| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Forgetting Sarah Marshall (2008) | £2,144,038 | £2,144,038 | £2,144,038 | new | 1 |
| 2 (new) |  | The Eye (2008) | £704,655 | £704,655 | £704,655 | new | 1 |
| 3 (1) |  | 21 (2008) | £547,865 | £939,871 | £4,486,686 | -46% | 3 |
| 4 (2) |  | Fools Gold (2008) | £476,244 | £869,879 | £1,845,377 | -51% | 2 |
| 5 (3) |  | In Bruges () | £408,109 | £734,808 | £3,554,199 | -36% | 7 |
| 6 (5) |  | Son of Rambow (2008) | £278,529 | £460,505 | £3,864,769 | -52% | 4 |
| 7 (new) |  | Deception (2008) | £255,958 | £255,958 | £255,958 | new | 1 |
| 8 (4) |  | Street Kings (2008) | £250,634 | £519,257 | £1,138,904 | -60% | 2 |
| 9 (6) |  | The Spiderwick Chronicles () | £238,362 | £335,620 | £10,260,713 | -57% | 6 |
| 10 (9) |  | Happy-Go-Lucky () | £238,099 | £425,565 | £810,755 | -38% | 2 |
| 11 (7) |  | Step Up 2: The Streets () | £237,344 | £399,084 | £10,199,953 | -54% | 6 |
| 12 (new) | | Three and Out (2008) | £189,454 | £189,454 | £189,454 | new | 1 |
| 13 (new) |  | Tashan () | £182,063 | £182,063 | £182,063 | new | 1 |
| 14 (new) |  | Persepolis () | £158,867 | £158,867 | £158,867 | new | 1 |
| 15 (10) |  | Horton Hears a Who! (2008) | £132,805 | £174,625 | £8,350,015 | -61% | 6 |
| 16 (new) |  | The Oxford Murders (2008) | £80,507 | £80,507 | £80,507 | new | 1 |
| 17 (new) |  | Stop-Loss (2008) | £8,201 | £8,201 | £8,201 | new | 1 |
| 18 (17) |  | Love In the Time of Cholera () | £5,072 | £14,446 | £345,900 | -19% | 6 |
| 19 (new) |  | Death Note () | £2,387 | £2,387 | £2,387 | new | 1 |
| 20 (19) | | Botched () | £505 | £3,304 | £8,480 | -90% | 2 |
| 21 (23) |  | The Accidental Husband () | £361 | £796 | £3,976,665 | 47% | 9 |
| 22 (24) |  | In the Valley of Elah (2007) | £21 | £-5,419 | £944,152 | -87% | 14 |